> I need to solve a sequence of LP, each is different from the > previous one only by ONE right hand side value. I cannot find any > routine let me modify the rhs and reoptimize. Is there a detour for > this purpose? I am using GLPK 4.39.
> This is related to my previous posting. I am thinking of use the > routine glp_set_row_bnds() to change right hand side. Since the basis > has already been factorized after the first optimization, I would like > to keep the factorization. Does the routine glp_set_row_bnds() > eliminate the factorization? The routines glp_get_row_stats() and > glp_set_row_stats() seem to remember and set what are basic column and > rows, but not the factorization. Am I right? Yes. You can use glp_set_row_bnds and glp_set_col_bnds to change bounds of rows and/or columns and then call glp_simplex to perform reoptimization starting from the current basis. _______________________________________________ Help-glpk mailing list [email protected] http://lists.gnu.org/mailman/listinfo/help-glpk
